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(No Model.)

2 SheetsSheet 1. G. F. MQINDOE.

MET-AL PLANING MACHINE.

No. 584,233. Patented June 8,1897.

UNITED STATES PATENT @rrrcn.

GEORGE F. MCINDOE, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE- IIALF TO JAMES W. MCINDOE, OF SAME PLACE.

METAL-PLANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 584,233, dated June 8, 1897.

Application filed September 26,1896. Serial No. 607,031. (No model.)

To all whom it may concern:

Be it known that I, GEORGE F. MOINDOE, of Boston, in the county of Sulfolk and State of Massachusetts, have invented certain new and useful Improvements in llletal-Planing Machines,'of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to metal-planing machines, and particularly to that class of such machines in which a tool acts upon the work during both forward and backward movements of the worlr-supportin g table, and is an improvement upon the invention described in the Letters Patent No. 479,606, granted to me July 26, 1892; and it consists in certain novel features of construction, arrangement, and combination of parts which will be readily understood by reference to the description of the accompanying drawings and to the claims hereto appended, and in which my invention is clearly pointed out.

Figure 1 of the drawings is an elevation of so much of the back side of a metal-planing machine as is necessary to illustrate my invention. Fig. 2 is a frontelevation of the tool-box, its carriage, and portions of the toolcarrying cross-head and the tool-tilting mechanism. Fig. 3 is a plan of the tool-box, its hold er, and portions of the tool-tiltin g devices. Fig. 4 is a vertical section on line so a: on Fig. 2. Fig. 5 is a side elevation of a modification of the frictional mechanism for operating the tool-tilting rods. Fig. 6 is a partial section through the frictional device for tilting the. tool-box, drawn to an enlarged scale.

The object of my present invention is to simplify the construction of a machine of the class referred to in the first paragraph, and thereby lessen the cost of its manufacture without detracting from the effectiveness of the machine or the beneficial results to be obtained therefrom.

The horizontal and vertical feed of the toolcarriage is obtained in substantially the same manner as in my before-cited patent, and therefore the feed mechanism is not shown in the present drawings or referred to further in this description.

In the drawings, Ais a portion of the planerbed, of usual construction, supported upon legs and provided with suitable Ways to guide the work-supporting table 13 and having the uprights A bolted thereto.

0 is the cap, and D is the tool-carrying cross-head, mounted upon and movable vertically on the uprights A, all in a well-known manner.

The cross-head D has mounted thereon so as to be movable longitudinally thereof the rectangular plate E, to the front face of which is pivoted at a the plate F, provided on its front face with the vertical dovetailed slide or guide way F, upon which is fitted so as to be movable vertically thereon the plate G, which may be adjusted vertically by means of the screw a and operating-crank Z), all in a well-known manner.

To the front face of the plate G is pivoted at b so as to be movable about said pivot to a limited extent the toolbox holder H, which may be secured in any desired position by means of the clamping-bolts c c in a wellknown manner.

The tool-box holder H is of novel construction in that it is provided at its lower end with the horizontally-projecting bail-like rectangular frame or yoke H and somewhat above the middle of its height with the ears d d, projecting horizontally, as shown in Figs. 1 and 4.

The ears d cl have set therein the fulcrumpin 6, upon which is mounted so as to be oscillated to a limited extent about said pin the tool-box I, provided with the top plate f, the ears g g, projecting downward from said top plate, and the ears 7?. h, projecting horizontally from its lower end, as shown in Figs. 1, 2, and 4.

J and J are the planer-tools, made rights and lofts and placed back to back and secured to the tool-box I by the bolts t' 7; and yoke K.

The plate f has set therein the set-screws jj, the points of which bear upon the upper ends of the tools J and J for the purpose of adjusting said tools vertically. The ears g g have set therein the set-screws 71; 7s, and the cars it 71 have set therein the set-screws Z Z, said screws 75 and Z acting upon the sides of the tools J and J for adjusting them laterally.

The cross-head D has secured to each end thereof a stand L, inv each of which is mounted a short shaft m, each carrying at its inner end a crank-arm m, in the free end of each of which is mounted one end of eachof two parallel rods '27, n.

The tool-box I has secured to its upper end the upwardly-projecting arm 0, of sufficient length to be acted upon by the rods 77. 7t,,he-

tween which it passes,when the tool box is de-.

as shown in Figs. 1, 2, and 8, or it may be asegment of a gear-wheel 1), having one side out through and provided with a clampingbolt 19 by which it may be clamped to said shaft with just sufficient force to cause said shaft m to turn with said wheel until the toolbox has been tilted in either direction to the required distance and then to slip on said shaft.

M is the driving-shaft, having mounted on its rear end the pinion M',which meshes into and imparts motion to the spur gear-wheel N on the shaft 0, upon which is apinion engaging the table-operating gear 0, said pinion and gear being indicated only by dottedcircles in Fig; l. The shaft 0 also has mounted upon its rear end a frictional hub P, of wellknown construction, provided with a crankpin q, upon which is mounted the lower end of the rod Q, the upper end of which-engages the wheel 19 or p, according to which type of friction device it is desired to employ between said rodQ and the shaft in.

If the grooved wheel p is employed, a portion of the upper end of the rod Q will have its front side made V'-shaped in cross-section and covered with leather or other suitable frictional material, as shown in Fig. 6, and is pressed into contact with said wheel 19 by the set-screw r, set in the ear L, formed upon or secured to the stand L, the point of said'setscrew bearing against the back of the yielding shoe R, composed of two metal plates r and T with a block of rubber r or other suitable spring interposed between them, as shown in Fig. (5. If, however, the toothed segment p or a toothed wheel be mounted on the shaft m, the upper portion of the rod Q will have a series of rack-teeth 3 formed upon its front'face, which engage with the teeth of the segment 19' and are held in engagement therewith by the shoe R and set-screwr, as shown in:Fig. 5.

The tool-box holder II hasformed upon-its lower end the ear H in which is set the rearwardly-projecting rod S, which has firmly secured to its rear end the arm S, which engages the rear edge of the lower rib -D of the cross-head D, as shown in Fig. at, for the purpose of relieving the strain upon the tool box holder when the tool J is operating upon the work and the tool-b0X is tilted into contact with the front bar of the bail or yoke H, said strain being transmitted to the uprights A by virtue of a strong connection of said. crosshead thereto.

The operation of myinvention is as follows: The parts being in the positions shown in the drawings and the machine beingin operation, the table B is moving in the direction indicated by the arrow 2 on Fig; 1, and if an object to be planed is in position on said table and the tools are adjusted to the proper position the tool J will cut a chip from said object, the shaft 0 revolving in the direction indicated by the arrow 4 until the movement of the table is reversed, as described in the before-cited patent, the frictional device P remaining in the position shown until the motion of the driving is reversed, when the frictional device will partake of the motion of the shaft 0 until the arm tcomes in contact with the stop-lug u on the stand T, during Which time the feed of the tool takes place, asdescribed in said prior patent, being operated by a frictional device upon-the opposite end of the shaft'O, but not shown in the drawings, and the rod Q ismoved upward, moving the wheelp or p, the cranks m, and the rods 12 n about the axis of the shaft m, thereby tilting the tool-boxl till the front ends of the cars it her the front edge of the tool J comes incontact with the front bar ofthe bail or yoke H of the tool-box holder H, when the tool J will be raised and the point of the tool J 'will'be lowered sufficiently to take a chip from the object being planed, while the table is being fed ill the opposite direction to that indicated by the'a'rrow 2. When the table hascompleted its motion in thisdirection and the motion of the shaft 0 is again reversed, the friction device P will move with said shaft iunt-il the arm t comes in contact with the stoplug 'u/ on the stand T, when therodQwill have been moved downward and moved the rods 11 n and the tool-box and tools into the positions shownin the drawings.

The rods 11 'n have fittedthereon so as to be freely movable lengthwise thereof the two tie-yokes w w, one upon each side of the arm 0, as shown in Figs. 2 and 3, for the-purpose of preventing the springing of the rods 01, 02 when acting upon said arm 0 to tilt or oscillate the tool-box. \Vhen commencing to plane a particular surface and the tools have been adjusted to the proper position for commencing the work, the yokes w w are both moved into contact with the arm 0, and as the tool is fed horizontally at each reversal of the motion of the table the yoke w in advance of said arm will be pushed along said rods by said arm, but will effectually prevent said vrodsfrom springing, and if the feed is reversed, so as to move the tools in the opposite direction, the other yoke, having-been moved into contact with the arm 0, will be moved along saidrod in the same manner.

What I claim asnew, and desire to secure by Letters Patent of the United States, is-

1. In a metal-planing machine the combination with avertically-movable cross-head YOO and a tool-carriage, movable horizontally thereon, of a tool-box. holder pivoted to said carriage, movable therewith and provided with a bail-like frame or yoke projecting horizontally from its lower end; a tool-box pivoted at its upper end to said holder with its lower end projecting through the opening of said frame or yoke; means having provision for vibrating said tool-box about its pivot to alternately contact with the back plate of said holder, and with the front bar of said frame or yoke; the bar or rod S set in said holder and projecting under the cross-head; and the arm S firmly secured to the rear end of said bar or rod in contact with the rear of said cross-head.

2. In a metal-planing machine, the combination with a vertically movable cross-head, and a tool-carriage movable horizontally thereon, of a tool-box holder pivoted to said carriage an d in ovable therewith, and provided with a bail-like frame or yoke projecting from its lower end as set forth; a tool-box pivoted at its upper end to said holder with its lower end projecting through the opening in said frame or yoke and provided with the upwardly-projecting arm 0, and movable about its pivot to alternately contact with the back plate of said holder and with the front bar of said yoke; the short shafts m at each provided with a crank-arm m; the parallel rods n, n, connecting said crank-arms and arranged to act upon opposite sides of said upwardly-projecting arm; and a frictional mechanism for moving said crankarms and parallel rod about the axis of the shaft m, alternately in opposite directions.

3. The combination inametal-planingmachine of a tool-box holder provided with a horiZontally-projecting bail-like frame or yoke; a tool-box pivoted to said carrier with its lower end projecting through the opening in said yoke; clamping bolts and bar for clamping a pair of tools, arranged back to back, to said tool-box; an upwardly-projecting arm formed upon or secured to the upper end of said tool-box 5 a pair of parallel rods arranged one upon each side of, and adapted to act upon said arm, and connected at each end to the free end of a crank-arm connected to a journal or short shaft mounted in a fixed bearing; a pair of tie-yokes connecting said parallel rods, one upon each side of said arm and freely movable on said rods; and a frictional mechanism for moving said crankarms and parallel rods about the axes of said journals or shafts alternately in opposite directions.

4:. In combination with the vertically-movable cross-head of a metal-planing machine, and a horizontallymovable tool-carriage mounted thereon; the tool-box holder H provided with the bail-like yoke H the tool-box I pivoted to said holder with its lower end projecting through the opening in said yoke; the arm 0 formed upon or secured to the upper end of said tool-box; the short shafts m provided with the crank-arms m; the rods a n; the toothed wheel or segment p frie tionally mounted upon a shaft m; the rod Q, provided with rack-teeth at its upper end ongaging the teeth of the wheel or segment 19;

and the crank-pin q fitted to a bearing in the lower end of the rod Q; the stand L; the shoe R and the set-screw r.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 24th day of September, A. D. 1896.

GEORGE F. MCINDOE.

XVitnesses:

N. O. LOMBARD, L. C. GREENLEAF. 

